858944 has 14 divisors (see below), whose sum is σ = 1704594. Its totient is φ = 429440.

The previous prime is 858943. The next prime is 858953. The reversal of 858944 is 449858.

It can be written as a sum of positive squares in only one way, i.e., 846400 + 12544 = 920^2 + 112^2 .

It is a junction number, because it is equal to n+sod(n) for n = 858898 and 858907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6647 + ... + 6774.

2⁸⁵⁸⁹⁴⁴ is an apocalyptic number.

It is an amenable number.

858944 is a deficient number, since it is larger than the sum of its proper divisors (845650).

858944 is a wasteful number, since it uses less digits than its factorization.

858944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13433 (or 13423 counting only the distinct ones).

The product of its digits is 46080, while the sum is 38.

The square root of 858944 is about 926.7923176203. The cubic root of 858944 is about 95.0579148247.

The spelling of 858944 in words is "eight hundred fifty-eight thousand, nine hundred forty-four".